function checksubscribtion()
{
	var obj = document.subscription_form;
	
	
	

	if(obj.email_address.value=="")
	{
		alert("Sorry! we cannot complete your request, please enter Email address");
		obj.email_address.focus();
		return false;
	}
	
	
	var emailFilter=/^.+@.+\..{2,3}$/;
	if(!emailFilter.test(obj.email_address.value)) { 
	alert("Sorry! we cannot complete your request, please enter valid Email address");
	obj.email_address.value='';
	obj.email_address.focus();
	return false; 
	}
	
	obj.submit();
}